mesh_looptools.py 文件源码

def initialise():
    global_undo = bpy.context.user_preferences.edit.use_global_undo
    bpy.context.user_preferences.edit.use_global_undo = False
    object = bpy.context.active_object
    if 'MIRROR' in [mod.type for mod in object.modifiers if mod.show_viewport]:
        # ensure that selection is synced for the derived mesh
        bpy.ops.object.mode_set(mode='OBJECT')
        bpy.ops.object.mode_set(mode='EDIT')
    bm = bmesh.from_edit_mesh(object.data)

    bm.verts.ensure_lookup_table()
    bm.edges.ensure_lookup_table()
    bm.faces.ensure_lookup_table()

    return(global_undo, object, bm)


# move the vertices to their new locations